Dunkin' Donuts

Dunkin' Donuts has a buy-one, get-one coffee deal. For every medium, large, or extra-large cup of the brand's signature hot coffee you buy on Friday, you get a free additional medium-sized hot coffee. Franchisees are also donating 14 tons of coffee to the American Red Cross.

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Tim Hortons

Tim Hortons

Starting on Friday, Tim Hortons locations in the US are giving away a free Original Blend, Dark Roast, Decaf or Iced Coffee of any size if customers download the chain's app. The deal lasts from September 29 to October 8.

McDonald's

7-Eleven

7-Eleven rewards program members can receive a coupon for one free cup of coffee on Friday, if they register through the chain's app. The coupon, which is good for one hot beverage in any size, needs to be redeemed by Sunday.

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Cinnabon

Facebook/Cinnabon

Cinnabon is giving away free 12-ounce cups of coffee all Friday.

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Sheetz

Facebook/Sheetz

You can get a free Pumpkin Spice Latte from Sheetz if you order through the convenience store chain's app on Friday.

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Starbucks

Starbucks

Starbucks isn't giving away free drinks, but it is swapping out menu boards with signs that give more background on the coffee being served.